CN112282719B - Hydraulic pulse generator and hydraulic pulse fracturing device - Google Patents
Hydraulic pulse generator and hydraulic pulse fracturing device Download PDFInfo
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- CN112282719B CN112282719B CN202011236164.6A CN202011236164A CN112282719B CN 112282719 B CN112282719 B CN 112282719B CN 202011236164 A CN202011236164 A CN 202011236164A CN 112282719 B CN112282719 B CN 112282719B
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- 239000012530 fluid Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000005381 potential energy Methods 0.000 claims abstract description 13
- 230000035485 pulse pressure Effects 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 29
- 238000004146 energy storage Methods 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000005553 drilling Methods 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003961 penetration enhancing agent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The application discloses a hydraulic pulse generator and a hydraulic pulse fracturing device, wherein the hydraulic pulse generator can convert high-pressure liquid into low-frequency pulse high-pressure liquid by utilizing the elastic potential energy of a spring so as to enhance the pulse pressure to form high impact force; the hydraulic pulse fracturing device specifically applies a hydraulic pulse generator; the hydraulic pulse fracturing device solves the problem that the existing hydraulic pulse fracturing device cannot enable fracturing fluid to enter a stratum with high impact force when hydraulic fracturing is carried out, so that efficient seam making is not achieved.
Description
Technical Field
The application relates to a hydraulic pulse generating device and a hydraulic pulse fracturing device.
Background
In recent decades, the problem of low permeability reservoir reformation is increasingly more and more serious, and the hydraulic fracturing technology is the most common solution, but a plurality of problems exist in the whole construction operation process, and a large amount of friction is generated in the process that the fracturing fluid enters the stratum through the continuous oil pipe, so that a part of energy is consumed, and the fracturing fluid cannot enter the stratum with high impact force, so that efficient seam making cannot be realized.
At present, the hydraulic pulse fracturing technology is a novel technology, can effectively solve the energy loss, manufacture high-impact pulse waves, form a 'water hammer effect', enable high-pressure liquid to rapidly enter a stratum and form a complex fracture network pattern, and has wide development space and application prospect.
The existing hydraulic pulse fracturing device is few, and has the defects, for example, in China patent CN 104847326B, a hydraulic motor is used for applying pressure to the hydraulic pulse fracturing device and driving a rotor to rotate, but in consideration of staged fracturing, the hydraulic motor is put down near a shaft to lose part of energy, so that the motor is required to be placed at a position close to a target fracturing interval, each interval is provided with a packer during staged fracturing, the put down motor is required to make the sealing of the interval not tight, and finally high-energy pulse pressure cannot be formed. Chinese patent CN 104929605B also discloses a downhole hydraulic pulse staged fracturing permeation enhancer, which does not consider that the elastic potential energy of the spring and the impact energy of water can reach energy balance at a certain moment to stop fluctuation, and the requirement of pulse cannot be met.
Disclosure of Invention
In view of this, the present application provides a hydraulic pulse generator that can provide a higher energy pulse impact force.
The application also provides a hydraulic pulse fracturing device, which solves the problem that the existing hydraulic pulse fracturing device cannot enable fracturing fluid to enter a stratum with high impact force when hydraulic fracturing is carried out, so that efficient seam making is not carried out.
In a first aspect, the hydraulic pulse generator is characterized by comprising:
the driving mechanism, the piston and the piston cavity;
the piston divides the piston cavity into an inflow cavity and a discharge cavity;
the inflow cavity is internally provided with a spring;
the driving mechanism is used for driving the piston to reciprocate in the piston cavity;
the reciprocating motion is used for driving the input liquid to enter the discharge cavity from the inflow cavity by the piston and compressing the liquid to be output from the discharge cavity alternately so as to generate pulse pressure;
the piston is used for compressing the spring and releasing the spring alternately so as to continuously generate elastic energy storage and release the elastic energy storage;
the released elastic energy storage is used for enhancing the pulse pressure.
Further, a first check valve is arranged on the piston;
the flow direction of the first check valve is from the inflow cavity to the discharge cavity; and/or the number of the groups of groups,
a second check valve is arranged on the side wall of the discharge cavity;
the second check valve has a flow direction from the discharge chamber to an exterior of the piston chamber.
Further, the driving mechanism includes:
an impeller;
the impeller is connected with the slide bar mechanism;
the slide bar mechanism is connected with the piston;
the liquid drives the impeller to rotate so as to drive the slide bar mechanism to drive the piston to reciprocate.
In a second aspect, the hydraulic pulse fracturing device is characterized by comprising:
the hydraulic pulse generator of.
Further, an oil pipe is connected above the piston cavity;
and the oil pipe is used for inputting fracturing fluid.
Further, the oil pipe is provided with an eccentric liquid inlet;
the eccentric liquid inlet is used for enhancing the rotation speed of the impeller so as to improve the speed of the reciprocating motion.
The application has the following beneficial effects:
the hydraulic pulse fracturing device is designed in a way that the elastic potential energy of the spring is utilized to further increase pulse energy, the elastic potential energy of the spring can convert high-pressure fracturing fluid into low-frequency pulse fracturing fluid, high impact force is formed underground, the fracturing fluid is pushed into a stratum, the rock is more effectively fractured to meet the requirement of directional fracturing of a reservoir, and the energy of the fracturing fluid obtained by pulse fracturing is stronger.
Drawings
The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments of the present application with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a hydraulic pulse generator according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the hydraulic pulse generator piston of an embodiment of the present application;
FIG. 3 is a schematic diagram of the hydraulic pulse generator piston up-travel structure according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the downstream structure of a hydraulic pulse generator piston according to an embodiment of the present application;
FIG. 5 is a schematic diagram of the working state structure of a hydraulic pulse fracturing device according to an embodiment of the application;
fig. 6 is a schematic view of a liquid inlet structure of an oil pipe according to an embodiment of the present application.
Detailed Description
The present application is described below based on examples, but it should be noted that the present application is not limited to these examples. In the following detailed description of the present application, certain specific details are set forth in detail. However, for the part not described in detail, the present application is also fully understood by those skilled in the art.
Furthermore, those of ordinary skill in the art will appreciate that the drawings are provided solely for the purposes of illustrating the objects, features, and advantages of the application and that the drawings are not necessarily drawn to scale.
Meanwhile, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
FIG. 1 is a schematic diagram of a hydraulic pulse generator according to an embodiment of the present application; in fig. 1, the hydraulic pulse generator of the present embodiment includes a driving mechanism and an energy storage mechanism 6, wherein the energy storage mechanism includes a piston 11 and a piston chamber 5.
The piston 11 divides the piston cavity 5 into an inflow cavity and a discharge cavity, and the inflow cavity is internally provided with a spring 7; the driving mechanism drives the piston 11 to reciprocate in the piston cavity 5; the reciprocating movement of the piston 11 is performed in order to drive the liquid input to the piston chamber 5 from the inflow chamber into the discharge chamber and to compress the liquid output from the discharge chamber alternately to generate a pulse pressure; simultaneously, the compression of the spring 7 by the piston 11 and the release of the spring 7 are alternately performed to continuously generate elastic energy storage and release the elastic energy storage; the released elastic energy storage is used to boost the pulse pressure.
In fig. 2, the piston 11 is provided with first check valves 8, the number of the first check valves 8 is 4, and the check valves are uniformly distributed along the circumferential direction of the piston 11. The first check valve 8 can be opened downwards so that high-pressure liquid entering the piston chamber 5 can enter the discharge chamber from the inflow chamber, whereas it is closed, i.e. liquid in the discharge chamber cannot enter the inflow chamber.
In fig. 1, the side wall of the discharge chamber is provided with a second check valve 9, which second check valve 9 can be opened outwards, so that high-pressure liquid can be discharged from the discharge chamber to the outside of the piston chamber 5, and vice versa. Specifically, four second check valves 9 are arranged around the outer wall of the lower part of the discharge cavity, and the valve membrane of each second check valve 9 can abut against the valve seat 10 to achieve the sealing effect, so that high-pressure liquid is prevented from flowing in the opposite direction.
The input liquid is high-pressure liquid, the piston 11 reciprocates in the piston cavity 5, in fig. 3, when the piston 11 goes up, the inflow cavity gradually becomes smaller, the discharge cavity gradually becomes larger, the first check valve 8 is opened, the second check valve 9 is closed, the piston 11 conveys the high-pressure liquid entering the inflow cavity to the discharge cavity, meanwhile, the piston 11 compresses the spring 7, and the spring 7 stores energy.
In fig. 5, when the piston 11 is downward, the first check valve 8 is closed, the second check valve 9 is opened, and the inflow chamber is filled with more high-pressure liquid, so that the high-pressure liquid is output to the discharge chamber when the next reciprocating movement is performed, the liquid in the discharge chamber is discharged from the discharge chamber under the compression of the piston 11, meanwhile, the elastic energy stored in the spring 7 is released, the elastic energy stored in the spring 7 pushes the piston 11 to quickly compress the high-pressure liquid in the discharge chamber, so that the discharged high-pressure liquid is pushed to be quickly sprayed outwards, so that the fluid can generate a pulse wave with larger intensity, more powerful pulse energy is formed, and the impact force with higher intensity is provided.
In fig. 1, the drive mechanism comprises an impeller 1, the impeller 1 comprising a number of blades 2, all the blades 2 being fixed on a shaft 3; the high-pressure liquid impacts the blades 2, the blades 2 rotate around the shaft 3, and the impeller 1 rotates; one end of the slide bar mechanism 4 is eccentrically connected to the impeller 1, and the other end is connected with the piston 11; the impeller 1 rotates to drive the slide bar mechanism 4 to generate reciprocating linear motion, and the slide bar mechanism 4 further drives the piston 11 to synchronously reciprocate linear motion.
In fig. 2 and 3, the number of impellers 1 is two, the two impellers 1 are arranged in a mirror image mode, the two impellers are connected through an eccentric shaft, and the eccentric shaft is further connected with a slide bar mechanism 4. Thus, the two impellers 1 drive the slide bar mechanism 4 together, and the force driven by the two impellers 1 is larger, so that the slide bar mechanism 4 can be ensured to improve the running stability, and larger acting force can be applied to the piston 11, so that the elastic potential energy of the compression spring 7 is further improved, and finally, the impact force with higher strength is generated.
The driving mechanism of the present embodiment adopts the conventional impeller 1 and slide bar mechanism 4 to drive the piston 11 to reciprocate linearly, however, the present embodiment is not limited to the technical scheme adopting such a structural form, and other technical schemes in the prior art are also within the scope of the present application if the reciprocating linear motion of the piston 11 can be driven.
Fig. 5 is a schematic structural diagram of an operating state of a hydraulic pulse fracturing device according to an embodiment of the application. In fig. 5, a hydraulic pulse fracturing device includes the hydraulic pulse generator shown in fig. 1.
In the hydraulic pulse fracturing construction, as shown in fig. 5, an oil pipe 15 is connected above the piston chamber 5, and a high-pressure fracturing fluid is input through the oil pipe 15.
In fig. 6, the oil pipe 15 is provided with an eccentric inlet 12, and the rotational speed of the impeller 1 can be increased by using the eccentric inlet 12 to increase the speed of the reciprocating motion. The number of the corresponding impellers 1 is two, preferably the number of the corresponding impellers 1, and the number of the eccentric liquid inlets 12 is also two.
Specifically, the working process of the hydraulic pulse fracturing device of the embodiment is described with reference to the accompanying drawings, so as to further explain the technical scheme of the application and help understand the beneficial effects of the technical scheme of the application:
when high-pressure liquid (namely fracturing fluid) enters from the oil pipe 15, the hydraulic impact drives the impeller 1 to rotate, and the impeller 1 rotates to drive the piston 11 to alternately perform piston ascending and piston descending:
(1) when the impeller 1 drives the piston 11 to ascend in the piston cavity 5 through the slide bar mechanism 4, the first check valve 8 on the piston 11 can be opened downwards due to downward impact force of the fracturing fluid, the second check valve 9 on the piston cavity 5 is in a closed state, and the piston 11 moves upwards to compress the spring 7, so that the spring 7 performs elastic energy storage, namely kinetic energy of the fracturing fluid is converted into elastic potential energy of the spring 7. At this time, the fracturing fluid enters from the first check valve 8 on the piston 11, and flows into the cavity 5 above the piston 11 and is filled with the fluid.
(2) When the impeller 1 drives the piston 11 to move downwards in the piston cavity 5 through the slide rod mechanism 4, the first check valve 8 is closed due to upward impact force of fracturing fluid in the discharge cavity below the piston 11 in the piston cavity 5 on the piston 11, the second check valve 9 arranged on the side wall below the discharge cavity is opened, elastic potential energy of the spring 7 is released, the piston 11 is pushed to move downwards rapidly by the elastic potential energy, and higher pressure is accumulated in the piston cavity 5. At this point the fracturing fluid is ejected outwardly from the second check valve 9 on the discharge chamber of the piston chamber 5, creating a pulsed pressure.
Under the action of hydraulic impact, the impeller 1 can continuously rotate, so that simple harmonic motion can be repeated, and pulse pressure can be continuously output in the stratum. In the process, the pulse pressure suddenly changes rapidly, the transition time between the wave crest and the wave trough of the pressure shock wave is short, a large amount of hydraulic pulse energy can be accumulated, and the fracturing reservoir is reformed by high impact force.
It can be seen that the hydraulic pulse fracturing device is different from the pulse fracturing mode mainly adopted in China, so that the hydraulic pulse fracturing device is a design conception that the elastic potential energy of the spring is utilized to further increase pulse energy, the elastic potential energy of the spring can convert high-pressure fracturing fluid into low-frequency pulse fracturing fluid, high impact force is formed underground, the fracturing fluid is pushed into a stratum, the rock is more effectively fractured to meet the requirement of directional fracturing of a reservoir, and the energy of the fracturing fluid obtained by pulse fracturing by the method is stronger.
Specifically, the construction method of the hydraulic pulse fracturing device of this embodiment will be described in detail with reference to fig. 5:
step 1, wellbore treatment: firstly, repeatedly cleaning a shaft by using well flushing liquid to prevent sundries in the shaft from blocking a check valve or entering a stratum to pollute a reservoir.
Step 2, perforating: after well flushing is finished, the perforating device is placed in a fracturing layer section to be fractured, and perforation is carried out on the fracturing layer section according to perforation design requirements.
Step 3, a fracturing string and a setting hydraulic packer are arranged: connecting the oil pipe 15 with the hydraulic packer 17 and the hydraulic pulse fracturing device 13 according to the design program, lowering the hydraulic pulse fracturing device 13 into a fracturing well section, starting the ground pumping pressure of the fracturing truck 18, and setting the hydraulic packer 17. And control pressure and displacement at the surface to achieve reasonable pulsing frequencies downhole.
And 4, after the controllable hydraulic packer is subjected to seal inspection, the ground pressure and the displacement are regulated, a hydraulic pulse fracturing device is started to generate pulse fluid, and meanwhile, the generation of underground pulse energy is controlled to achieve the expected 'water hammer effect'. The construction is carried out by the pressing crack construction program, the construction effect of the pressing crack net 14 is monitored by arranging an observation port on the ground, and after the preset requirement is met, the hydraulic pulse fracturing is finished.
Step 5, layer-changing fracturing: after the first interval is fractured, the hydraulic packer 17 is unsealed. Lifting the string to the surface, and checking or replacing the downhole equipment. The bridge plug 16 is pumped in and the above operation is repeated for the replacement pressure fracture.
And 6, finishing construction: after fracturing all the intervals, the hydraulic packer 17 is unsealed, and the tubular column is lifted up to take out the downhole device. The running-in plug device drills through the bridge plug 16, and the fracturing construction is finished.
The above examples are merely illustrative embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that modifications, equivalent substitutions, improvements, etc. can be made by those skilled in the art without departing from the spirit of the present application, and these are all within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (1)
1. A hydraulic pulse fracturing device comprising a hydraulic pulse generator, the hydraulic pulse generator comprising:
the driving mechanism, the piston (11) and the piston cavity (5);
the piston (11) divides the piston chamber (5) into an inflow chamber and a discharge chamber;
the inflow cavity is internally provided with a spring (7);
the driving mechanism is used for driving the piston (11) to reciprocate in the piston cavity (5);
-said reciprocating motion for said piston (11) driving the input liquid from said inflow chamber into said discharge chamber and compressing said liquid output from said discharge chamber alternately to generate a pulsed pressure;
and for the piston (11) to compress the spring (7) and release the spring (7) alternately to constantly generate elastic energy storage and release the elastic energy storage;
the released elastic energy storage is used for enhancing the pulse pressure;
a first check valve (8) is arranged on the piston (11), and the flow direction of the first check valve (8) is from the inflow cavity to the discharge cavity;
a second check valve (9) is arranged on the side wall of the discharge cavity, and the flow direction of the second check valve (9) is from the discharge cavity to the outside of the piston cavity (5);
the driving mechanism comprises an impeller (1); the impeller (1) is connected with the slide bar mechanism (4); the slide bar mechanism (4) is connected with the piston (11); the liquid drives the impeller (1) to rotate so as to drive the slide bar mechanism (4) to drive the piston (11) to do the reciprocating motion;
an oil pipe (15) is connected above the piston cavity (5), and the oil pipe (15) is used for inputting fracturing fluid;
the oil pipe (15) is provided with an eccentric liquid inlet (12); the number of the impellers (1) is two, and the number of the eccentric liquid inlets (12) is also two corresponding to the number of the impellers (1), so that the rotation speed of the impellers (1) is increased to increase the reciprocating speed;
when high-pressure fracturing fluid enters from the oil pipe (15), the fracturing fluid impacts to drive the impeller (1) to rotate, and the impeller (1) rotates to drive the piston (11) to alternately perform piston ascending and piston descending:
when the impeller (1) drives the piston (11) to ascend in the piston cavity (5) through the slide bar mechanism (4), the first check valve (8) on the piston (11) can be opened downwards due to downward impact force of the fracturing fluid, the second check valve (9) on the piston cavity (5) is in a closed state, and the piston (11) moves upwards to compress the spring (7), so that the spring (7) carries out elastic energy storage, namely kinetic energy of the fracturing fluid is converted into elastic potential energy of the spring (7); at the moment, the fracturing fluid enters from a first check valve (8) on the piston (11), and flows into the cavity (5) above the piston (11) and is filled with the fluid;
when the impeller (1) drives the piston (11) to descend in the piston cavity (5) through the slide bar mechanism (4), the first check valve (8) is closed due to upward impact force of fracturing fluid in the discharge cavity below the piston (11) in the piston cavity (5) on the piston (11), the second check valve (9) arranged on the side wall below the discharge cavity is opened, elastic potential energy of the spring (7) is released, the piston (11) is pushed by the elastic potential energy to rapidly move downwards, and higher pressure is accumulated in the piston cavity (5); at the moment, the fracturing fluid is sprayed outwards from a second check valve (9) on a discharge cavity of the piston cavity (5) to generate pulse pressure; the construction method of the hydraulic pulse fracturing device comprises the following steps:
step 1, wellbore treatment: firstly, repeatedly cleaning a shaft by using well flushing liquid to prevent impurities in the shaft from blocking a first check valve, a second check valve or entering a stratum to pollute a reservoir;
step 2, perforating: after well flushing is finished, the perforating device is put into a fracturing layer section to be fractured, and perforation is carried out on the fracturing section according to perforation design requirements;
step 3, a fracturing string and a setting hydraulic packer are arranged: connecting an oil pipe (15), a hydraulic packer (17) and a hydraulic pulse fracturing device (13) according to a design program, lowering the hydraulic pulse fracturing device (13) into a fracturing well section, starting a ground pumping pressure of a fracturing truck (18), and setting the hydraulic packer (17); and controlling pressure and displacement at the surface to achieve reasonable pulse frequency at the bottom of the well;
step 4, after the controllable hydraulic packer is subjected to seal inspection, the ground pressure and the displacement are regulated, a hydraulic pulse fracturing device is started to generate pulse fluid, and meanwhile, the generation of underground pulse energy is controlled to achieve the expected 'water hammer effect'; the construction is carried out by a pressing crack construction program, an observation port is arranged on the ground to monitor the construction effect of a pressing crack net (14), and after the preset requirement is met, the hydraulic pulse fracturing is finished;
step 5, layer-changing fracturing: after the fracturing of the first interval is finished, the hydraulic packer (17) is unsealed, the tubular column is lifted to the ground, and the underground equipment is checked or replaced; pumping in the bridge plug (16) and repeating the above operations for replacement fracturing;
and 6, finishing construction: after fracturing all the intervals, unsealing the hydraulic packer (17), and lifting the tubular column to take out the downhole device; and (5) drilling through the bridge plug (16) by the plug drilling equipment, and finishing the fracturing construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236164.6A CN112282719B (en) | 2020-11-09 | 2020-11-09 | Hydraulic pulse generator and hydraulic pulse fracturing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011236164.6A CN112282719B (en) | 2020-11-09 | 2020-11-09 | Hydraulic pulse generator and hydraulic pulse fracturing device |
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| CN112282719A CN112282719A (en) | 2021-01-29 |
| CN112282719B true CN112282719B (en) | 2023-08-18 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB424062A (en) * | 1933-08-14 | 1935-02-14 | Zacharias Williams Daw | Improvements in or relating to rotary engines, pumps, and the like |
| CN102430534A (en) * | 2011-10-28 | 2012-05-02 | 中国农业科学院农田灌溉研究所 | Pulse energy storage type high-pressure water jet cleaning system |
| CN102505720A (en) * | 2011-10-28 | 2012-06-20 | 中国农业科学院农田灌溉研究所 | Pulse energy-storage type waterpower dredging system |
| CN102536121A (en) * | 2012-02-08 | 2012-07-04 | 中国石油大学(北京) | Pulse type underground pressurization jet flow drilling method and device |
| CN103452482A (en) * | 2013-09-12 | 2013-12-18 | 中国石油大学(北京) | Bevel gear set reversing underground pulse jet supercharging device |
| CN104564608A (en) * | 2014-12-30 | 2015-04-29 | 广西科技大学 | Double-acting pulse airflow generation device |
| CN204646160U (en) * | 2015-05-29 | 2015-09-16 | 西南石油大学 | A kind of side valve type pressure pulse generator |
| CN104929605A (en) * | 2015-06-26 | 2015-09-23 | 重庆地质矿产研究院 | Underground hydraulic pulse staged fracturing and permeability increasing device and method |
| CN105422005A (en) * | 2015-11-12 | 2016-03-23 | 中国石油大学(北京) | Well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration |
| CN107237783A (en) * | 2017-08-09 | 2017-10-10 | 烟台海得力克模具自动化有限公司 | A kind of accumulation of energy supercharging device |
| CN207033859U (en) * | 2017-08-09 | 2018-02-23 | 烟台海得力克模具自动化有限公司 | A kind of accumulation of energy supercharging device |
| CN109113567A (en) * | 2018-10-29 | 2019-01-01 | 长江大学 | A kind of hydraulic booster liquid jet instrument |
| CN109882102A (en) * | 2019-04-15 | 2019-06-14 | 长江大学 | A kind of link-type drop is rubbed oscillation tool |
-
2020
- 2020-11-09 CN CN202011236164.6A patent/CN112282719B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB424062A (en) * | 1933-08-14 | 1935-02-14 | Zacharias Williams Daw | Improvements in or relating to rotary engines, pumps, and the like |
| CN102430534A (en) * | 2011-10-28 | 2012-05-02 | 中国农业科学院农田灌溉研究所 | Pulse energy storage type high-pressure water jet cleaning system |
| CN102505720A (en) * | 2011-10-28 | 2012-06-20 | 中国农业科学院农田灌溉研究所 | Pulse energy-storage type waterpower dredging system |
| CN102536121A (en) * | 2012-02-08 | 2012-07-04 | 中国石油大学(北京) | Pulse type underground pressurization jet flow drilling method and device |
| CN103452482A (en) * | 2013-09-12 | 2013-12-18 | 中国石油大学(北京) | Bevel gear set reversing underground pulse jet supercharging device |
| CN104564608A (en) * | 2014-12-30 | 2015-04-29 | 广西科技大学 | Double-acting pulse airflow generation device |
| CN204646160U (en) * | 2015-05-29 | 2015-09-16 | 西南石油大学 | A kind of side valve type pressure pulse generator |
| CN104929605A (en) * | 2015-06-26 | 2015-09-23 | 重庆地质矿产研究院 | Underground hydraulic pulse staged fracturing and permeability increasing device and method |
| CN105422005A (en) * | 2015-11-12 | 2016-03-23 | 中国石油大学(北京) | Well drilling method and device through hydraulic power and disc spring coupling driving and axial vibration |
| CN107237783A (en) * | 2017-08-09 | 2017-10-10 | 烟台海得力克模具自动化有限公司 | A kind of accumulation of energy supercharging device |
| CN207033859U (en) * | 2017-08-09 | 2018-02-23 | 烟台海得力克模具自动化有限公司 | A kind of accumulation of energy supercharging device |
| CN109113567A (en) * | 2018-10-29 | 2019-01-01 | 长江大学 | A kind of hydraulic booster liquid jet instrument |
| CN109882102A (en) * | 2019-04-15 | 2019-06-14 | 长江大学 | A kind of link-type drop is rubbed oscillation tool |
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